#!/bin/sh

name="clang-format"

if [ -z "$(command -v "git-$name")" ]; then
  name="$(basename -a $(find $(echo "$PATH" | tr ':' ' ') -maxdepth 1 -type f -executable -name 'git-clang-format*') | sort | tail -n 1 | sed 's/^git-//')"
fi

minVersion="14.0.0"

for file in $(find $(echo "$PATH" | tr ':' ' ') -maxdepth 1 -type f -executable -name 'clang-format*'); do
  curBin="$file"
  curVersion="$("$curBin" --version | cut -d ' ' -f 3)"

  if [ "$(printf '%s\n' "$curVersion" "$version" "$minVersion" | sort -V | tail -n 1)" = "$curVersion" ]; then
    bin="$curBin"
    version="$curVersion"
  fi
done

if [ -z "$name" ] || [ -z "$bin" ]; then
  echo "Could not find a suitable clang-format installation. Install clang-format that includes the git-clang-format script, with at least version $minVersion"
  exit 1
fi

args="--binary $bin -q --extensions cpp,h --style file --staged -- :!src/FreeRTOS :!src/libs"

changedFiles="$(git "$name" --diffstat $args)"
git "$name" $args

echo "$changedFiles" | head -n -1 | cut -d ' ' -f 2 | while read -r file; do
  git add -- "$file"
done
